20818 (AQUA PRO) DISPOSITIF ANTI-RETOUR POUR EAU POTABLE, RACCORDS MÂLES 1/2 PO

20818 is an Aqua Pro fresh water backflow preventer designed to help prevent water from flowing backward into the supply line of compatible RV plumbing systems. It features 1/2-inch male pipe threads on both ends for inline installation. Made from non-toxic, food-grade materials, this lead-free valve is certified to NSF and IAPMO standards. It can serve as a replacement for compatible Marshall Brass and Hydronamic products. Confirm thread specifications and system compatibility before installation.